GHSA-PG27-6936-JG2X

Vulnerability from github – Published: 2024-11-26 00:33 – Updated: 2025-11-04 00:32

Details

In the Linux kernel, the following vulnerability has been resolved:

mm: krealloc: Fix MTE false alarm in __do_krealloc

This patch addresses an issue introduced by commit 1a83a716ec233 ("mm: krealloc: consider spare memory for __GFP_ZERO") which causes MTE (Memory Tagging Extension) to falsely report a slab-out-of-bounds error.

The problem occurs when zeroing out spare memory in __do_krealloc. The original code only considered software-based KASAN and did not account for MTE. It does not reset the KASAN tag before calling memset, leading to a mismatch between the pointer tag and the memory tag, resulting in a false positive.

Example of the error:

swapper/0: BUG: KASAN: slab-out-of-bounds in __memset+0x84/0x188 swapper/0: Write at addr f4ffff8005f0fdf0 by task swapper/0/1 swapper/0: Pointer tag: [f4], memory tag: [fe] swapper/0: swapper/0: CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12. swapper/0: Hardware name: MT6991(ENG) (DT) swapper/0: Call trace: swapper/0: dump_backtrace+0xfc/0x17c swapper/0: show_stack+0x18/0x28 swapper/0: dump_stack_lvl+0x40/0xa0 swapper/0: print_report+0x1b8/0x71c swapper/0: kasan_report+0xec/0x14c swapper/0: __do_kernel_fault+0x60/0x29c swapper/0: do_bad_area+0x30/0xdc swapper/0: do_tag_check_fault+0x20/0x34 swapper/0: do_mem_abort+0x58/0x104 swapper/0: el1_abort+0x3c/0x5c swapper/0: el1h_64_sync_handler+0x80/0xcc swapper/0: el1h_64_sync+0x68/0x6c swapper/0: __memset+0x84/0x188 swapper/0: btf_populate_kfunc_set+0x280/0x3d8 swapper/0: __register_btf_kfunc_id_set+0x43c/0x468 swapper/0: register_btf_kfunc_id_set+0x48/0x60 swapper/0: register_nf_nat_bpf+0x1c/0x40 swapper/0: nf_nat_init+0xc0/0x128 swapper/0: do_one_initcall+0x184/0x464 swapper/0: do_initcall_level+0xdc/0x1b0 swapper/0: do_initcalls+0x70/0xc0 swapper/0: do_basic_setup+0x1c/0x28 swapper/0: kernel_init_freeable+0x144/0x1b8 swapper/0: kernel_init+0x20/0x1a8 swapper/0: ret_from_fork+0x10/0x20 ==================================================================

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-53097"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-25T22:15:15Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: krealloc: Fix MTE false alarm in __do_krealloc\n\nThis patch addresses an issue introduced by commit 1a83a716ec233 (\"mm:\nkrealloc: consider spare memory for __GFP_ZERO\") which causes MTE\n(Memory Tagging Extension) to falsely report a slab-out-of-bounds error.\n\nThe problem occurs when zeroing out spare memory in __do_krealloc. The\noriginal code only considered software-based KASAN and did not account\nfor MTE. It does not reset the KASAN tag before calling memset, leading\nto a mismatch between the pointer tag and the memory tag, resulting\nin a false positive.\n\nExample of the error:\n==================================================================\nswapper/0: BUG: KASAN: slab-out-of-bounds in __memset+0x84/0x188\nswapper/0: Write at addr f4ffff8005f0fdf0 by task swapper/0/1\nswapper/0: Pointer tag: [f4], memory tag: [fe]\nswapper/0:\nswapper/0: CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.\nswapper/0: Hardware name: MT6991(ENG) (DT)\nswapper/0: Call trace:\nswapper/0:  dump_backtrace+0xfc/0x17c\nswapper/0:  show_stack+0x18/0x28\nswapper/0:  dump_stack_lvl+0x40/0xa0\nswapper/0:  print_report+0x1b8/0x71c\nswapper/0:  kasan_report+0xec/0x14c\nswapper/0:  __do_kernel_fault+0x60/0x29c\nswapper/0:  do_bad_area+0x30/0xdc\nswapper/0:  do_tag_check_fault+0x20/0x34\nswapper/0:  do_mem_abort+0x58/0x104\nswapper/0:  el1_abort+0x3c/0x5c\nswapper/0:  el1h_64_sync_handler+0x80/0xcc\nswapper/0:  el1h_64_sync+0x68/0x6c\nswapper/0:  __memset+0x84/0x188\nswapper/0:  btf_populate_kfunc_set+0x280/0x3d8\nswapper/0:  __register_btf_kfunc_id_set+0x43c/0x468\nswapper/0:  register_btf_kfunc_id_set+0x48/0x60\nswapper/0:  register_nf_nat_bpf+0x1c/0x40\nswapper/0:  nf_nat_init+0xc0/0x128\nswapper/0:  do_one_initcall+0x184/0x464\nswapper/0:  do_initcall_level+0xdc/0x1b0\nswapper/0:  do_initcalls+0x70/0xc0\nswapper/0:  do_basic_setup+0x1c/0x28\nswapper/0:  kernel_init_freeable+0x144/0x1b8\nswapper/0:  kernel_init+0x20/0x1a8\nswapper/0:  ret_from_fork+0x10/0x20\n==================================================================",
  "id": "GHSA-pg27-6936-jg2x",
  "modified": "2025-11-04T00:32:07Z",
  "published": "2024-11-26T00:33:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53097"
    },
    {
      "type": "WEB",
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      "url": "https://git.kernel.org/stable/c/71548fada7ee0eb50cc6ccda82dff010c745f92c"
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      "type": "WEB",
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      "url": "https://git.kernel.org/stable/c/d02492863023431c31f85d570f718433c22b9311"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d43f1430d47c22a0727c05b6f156ed25fecdfeb4"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-53097 (GCVE-0-2024-53097)

Vulnerability from cvelistv5 – Published: 2024-11-25 21:21 – Updated: 2026-05-23 15:55

Title

mm: krealloc: Fix MTE false alarm in __do_krealloc

Summary

In the Linux kernel, the following vulnerability has been resolved: mm: krealloc: Fix MTE false alarm in __do_krealloc This patch addresses an issue introduced by commit 1a83a716ec233 ("mm: krealloc: consider spare memory for __GFP_ZERO") which causes MTE (Memory Tagging Extension) to falsely report a slab-out-of-bounds error. The problem occurs when zeroing out spare memory in __do_krealloc. The original code only considered software-based KASAN and did not account for MTE. It does not reset the KASAN tag before calling memset, leading to a mismatch between the pointer tag and the memory tag, resulting in a false positive. Example of the error: ================================================================== swapper/0: BUG: KASAN: slab-out-of-bounds in __memset+0x84/0x188 swapper/0: Write at addr f4ffff8005f0fdf0 by task swapper/0/1 swapper/0: Pointer tag: [f4], memory tag: [fe] swapper/0: swapper/0: CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12. swapper/0: Hardware name: MT6991(ENG) (DT) swapper/0: Call trace: swapper/0: dump_backtrace+0xfc/0x17c swapper/0: show_stack+0x18/0x28 swapper/0: dump_stack_lvl+0x40/0xa0 swapper/0: print_report+0x1b8/0x71c swapper/0: kasan_report+0xec/0x14c swapper/0: __do_kernel_fault+0x60/0x29c swapper/0: do_bad_area+0x30/0xdc swapper/0: do_tag_check_fault+0x20/0x34 swapper/0: do_mem_abort+0x58/0x104 swapper/0: el1_abort+0x3c/0x5c swapper/0: el1h_64_sync_handler+0x80/0xcc swapper/0: el1h_64_sync+0x68/0x6c swapper/0: __memset+0x84/0x188 swapper/0: btf_populate_kfunc_set+0x280/0x3d8 swapper/0: __register_btf_kfunc_id_set+0x43c/0x468 swapper/0: register_btf_kfunc_id_set+0x48/0x60 swapper/0: register_nf_nat_bpf+0x1c/0x40 swapper/0: nf_nat_init+0xc0/0x128 swapper/0: do_one_initcall+0x184/0x464 swapper/0: do_initcall_level+0xdc/0x1b0 swapper/0: do_initcalls+0x70/0xc0 swapper/0: do_basic_setup+0x1c/0x28 swapper/0: kernel_init_freeable+0x144/0x1b8 swapper/0: kernel_init+0x20/0x1a8 swapper/0: ret_from_fork+0x10/0x20 ==================================================================

Severity

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-01 20:11 UTC

CWE

CWE-noinfo Not enough information

Assigner

Linux mitre root

References

9 references

URL	Tags
https://git.kernel.org/stable/c/8ebee7565effdeae6…
https://git.kernel.org/stable/c/d02492863023431c3…
https://git.kernel.org/stable/c/d43f1430d47c22a07…
https://git.kernel.org/stable/c/486aeb5f1855c75dd…
https://git.kernel.org/stable/c/71548fada7ee0eb50…
https://git.kernel.org/stable/c/3dfb40da84f26dd35…
https://git.kernel.org/stable/c/704573851b51808b4…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: c383263ee82a01a5a9bc1a466025ccde39a38cae , < 8ebee7565effdeae6085458f8f8463363120a871 (git) Affected: a543785856249a5ba8c20468098601c0c33b1224 , < d02492863023431c31f85d570f718433c22b9311 (git) Affected: 44f79667fefd52945a44d2a57a2cd3c554d7f4e0 , < d43f1430d47c22a0727c05b6f156ed25fecdfeb4 (git) Affected: f8767d10bcbc2529540eb906906c0058e15cd918 , < 486aeb5f1855c75dd810c25036134961bd2a6722 (git) Affected: e3a9fc1520a6606c6121aca8d6679c6b93de7fd8 , < 71548fada7ee0eb50cc6ccda82dff010c745f92c (git) Affected: 3e9a65a38706866bf93e19f5b4936465188add10 , < 3dfb40da84f26dd35dd9bbaf626a2424565b8406 (git) Affected: 1a83a716ec233990e1fd5b6fbb1200ade63bf450 , < 704573851b51808b45dae2d62059d1d8189138a2 (git) Affected: 73388659ef0eea51747350530afdeadf8809ce9c (git) Affected: 6.10.14 , < 6.11 (semver)
Linux	Linux	Affected: 5.10.227 , < 5.10.230 (semver) Affected: 5.15.168 , < 5.15.173 (semver) Affected: 6.1.113 , < 6.1.118 (semver) Affected: 6.6.55 , < 6.6.62 (semver) Affected: 6.11.3 , < 6.11.9 (semver)

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{
  "containers": {
    "adp": [
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        "metrics": [
          {
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              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
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              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
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        "providerMetadata": {
          "dateUpdated": "2025-10-01T20:17:12.726Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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                },
                {
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: krealloc: Fix MTE false alarm in __do_krealloc\n\nThis patch addresses an issue introduced by commit 1a83a716ec233 (\"mm:\nkrealloc: consider spare memory for __GFP_ZERO\") which causes MTE\n(Memory Tagging Extension) to falsely report a slab-out-of-bounds error.\n\nThe problem occurs when zeroing out spare memory in __do_krealloc. The\noriginal code only considered software-based KASAN and did not account\nfor MTE. It does not reset the KASAN tag before calling memset, leading\nto a mismatch between the pointer tag and the memory tag, resulting\nin a false positive.\n\nExample of the error:\n==================================================================\nswapper/0: BUG: KASAN: slab-out-of-bounds in __memset+0x84/0x188\nswapper/0: Write at addr f4ffff8005f0fdf0 by task swapper/0/1\nswapper/0: Pointer tag: [f4], memory tag: [fe]\nswapper/0:\nswapper/0: CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.\nswapper/0: Hardware name: MT6991(ENG) (DT)\nswapper/0: Call trace:\nswapper/0:  dump_backtrace+0xfc/0x17c\nswapper/0:  show_stack+0x18/0x28\nswapper/0:  dump_stack_lvl+0x40/0xa0\nswapper/0:  print_report+0x1b8/0x71c\nswapper/0:  kasan_report+0xec/0x14c\nswapper/0:  __do_kernel_fault+0x60/0x29c\nswapper/0:  do_bad_area+0x30/0xdc\nswapper/0:  do_tag_check_fault+0x20/0x34\nswapper/0:  do_mem_abort+0x58/0x104\nswapper/0:  el1_abort+0x3c/0x5c\nswapper/0:  el1h_64_sync_handler+0x80/0xcc\nswapper/0:  el1h_64_sync+0x68/0x6c\nswapper/0:  __memset+0x84/0x188\nswapper/0:  btf_populate_kfunc_set+0x280/0x3d8\nswapper/0:  __register_btf_kfunc_id_set+0x43c/0x468\nswapper/0:  register_btf_kfunc_id_set+0x48/0x60\nswapper/0:  register_nf_nat_bpf+0x1c/0x40\nswapper/0:  nf_nat_init+0xc0/0x128\nswapper/0:  do_one_initcall+0x184/0x464\nswapper/0:  do_initcall_level+0xdc/0x1b0\nswapper/0:  do_initcalls+0x70/0xc0\nswapper/0:  do_basic_setup+0x1c/0x28\nswapper/0:  kernel_init_freeable+0x144/0x1b8\nswapper/0:  kernel_init+0x20/0x1a8\nswapper/0:  ret_from_fork+0x10/0x20\n=================================================================="
        }
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        },
        {
          "url": "https://git.kernel.org/stable/c/d02492863023431c31f85d570f718433c22b9311"
        },
        {
          "url": "https://git.kernel.org/stable/c/d43f1430d47c22a0727c05b6f156ed25fecdfeb4"
        },
        {
          "url": "https://git.kernel.org/stable/c/486aeb5f1855c75dd810c25036134961bd2a6722"
        },
        {
          "url": "https://git.kernel.org/stable/c/71548fada7ee0eb50cc6ccda82dff010c745f92c"
        },
        {
          "url": "https://git.kernel.org/stable/c/3dfb40da84f26dd35dd9bbaf626a2424565b8406"
        },
        {
          "url": "https://git.kernel.org/stable/c/704573851b51808b45dae2d62059d1d8189138a2"
        }
      ],
      "title": "mm: krealloc: Fix MTE false alarm in __do_krealloc",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-53097",
    "datePublished": "2024-11-25T21:21:26.549Z",
    "dateReserved": "2024-11-19T17:17:24.983Z",
    "dateUpdated": "2026-05-23T15:55:08.845Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.